BK Radio DPHX User manual

DPHX
DIGITALPORTABLERADIO
Owner’s Manual
© Copyright 2006 RELM Wireless Corporation. All rights reserved.
P/N 7001-30958-100 12-04
BK Radio
7100 Technology Drive
West Melbourne, FL 32904
Telephone: [phone]
FAX: [phone]
www.relm.com
American Communication Systems
Discover the Power of Communications
™
TO ORDER –VISIT http://www.ameradio.com

DPH x Owner’s Manual 3
TABLE OF CONTENTS
Features..................................................................Inside Front Cover
Introduction.........................................................................................4
FCC Requirements.............................................................................4
Safety Precautions..............................................................................4
RF Energy Exposure Awareness And Control Information...................5
Radio Controls....................................................................................8
Basic Operation..................................................................................9
Channel Guard Operation.................................................................10
Mixed Mode Operation......................................................................12
Secure Operation..............................................................................13
Channel Groups................................................................................15
Programmable Top Switches/ Function Menu....................................17
Scan Operation.................................................................................18
Priority Scan.....................................................................................21
Unit-To-Unit Call ...............................................................................27
Emergency Call.................................................................................32
User Selected Channel Guard...........................................................32
Other Operational Features...............................................................33
Alphanumeric Display .......................................................................37
Cloning Procedure............................................................................39
Key Fill..............................................................................................42
Battery Installation And Removal.......................................................43
Definitions And Acronyms.................................................................44
Service .................................................................... Inside Back Cover

4 BK Radio
INTRODUCTION
CONGRATULATIONS, you now own a BK Radio DPH x APCO Project
25 digital radio. To meet backwards compatibility as defined by the
APCO Project 25 standard, the DPH
x digital portable radio provides
users the ability to interoperate with narrow or wide band analog
channels as well as digital systems. Please take a moment to read the
information in this manual so you can get optimum performance from
your new radio.
FCC REQUIREMENTS
Your radio must be properly licensed by the Federal Communications
Commission prior to use. Your BK Radio dealer can assist you in
meeting these requirements. Your dealer will program each radio with
your authorized frequencies, signaling codes, etc., and will be there to
meet your communications needs as your system expands.
SAFETY PRECAUTIONS
• Do not operate the transmitter in close proximity
to blasting caps.
• Do not operate the radio in an explosive
atmosphere (petroleum fuels, solvents, dust,
etc.) unless your radio is an intrinsically safe
model designed for such use.
DPH x Owner’s Manual 45
NOTES:

44 BK Radio
DEFINITIONS AND ACRONYMS
AES APCO Project 25 Advanced Encryption Standard
ANI Automatic Numeric Identification
CG Channel Guard
CLR Clear
Cloning The process of copying data from one radio, called
“master,” to other radios, called “slaves” or “clones.”
Channel
Guard A sub-audible tone, a code (analog) or a Network Access Code (digital) for selective calling and
receiving.
DES APCO Project 25 Encryption Standard
Detent The click/hesitation you feel as you turn a knob from
one position to another.
DTMF Dual Tone Multiple Frequency
DTMF Tones Tones that sound like those used by a standard
push-button telephone.
ENT Enter
FCN Function
GRP Group Label
ID Digital reception/transmission – ‘It’s Digital.”
Individual
Personality The information programmed with a PC on both a global and by-channel basis that tells the radio
exactly how to operate.
LCD Liquid Crystal Display
Mixed Mode Allows Analog & Digital operation on same channel.
NAC Network Access Code for digital channel.
PR Priority Channel
PRG Program
PRI Priority
PTT Push To Talk
RTA Repeater Talk Around
RTX Channel Ready to Transmit Channel
RX Receive
SCN Scan
SQ Squelch
Squelch A control that eliminates background noise.
Talkback Scan When scanning, if a signal is present, the scan will
stop and you will hear the signal. If you then push
the PTT switch to talk back to the person, you are in
Talkback Scan Mode.
TGID Talk Group ID
Time-Out Timer A feature that limits the duration of calls.
TX Transmit
DPH x Owner’s Manual 5
RF ENERGY EXPOSURE AWARENESS AND
CONTROL INFORMATION, AND OPERATIONAL
INSTRUCTIONS FOR FCC OCCUPATIONAL USE
REQUIREMENTS
BEFORE USING YOUR PORTABLE 2-WAY RADIO,
READ THIS IMPORTANT RF ENERGY AWARENESS AND
CONTROL INFORMATION AND
OPERATIONAL INSTRUCTIONS TO ENSURE COMPLIANCE WITH
THE FCC’S RF EXPOSURE GUIDELINES.
NOTICE: This radio is intended for use in occupational/controlled
conditions, where users have full knowledge of their exposure
and can exercise control over their exposure to meet FCC limits.
This radio device is NOT authorized for general population,
consumer, or any other use.
This 2-way radio uses electromagnetic energy in the radio frequency
(RF) spectrum to provide communications between two or more users
over a distance. It uses radio frequency (RF) energy or radio waves to
send and receive calls. RF energy is one form of electromagnetic
energy; other forms include electric power, radar, sunlight and x-rays.
RF energy, however, should not be confused with these other forms of
electromagnetic energy, which when used improperly can cause
biological damage. Very high levels of x-rays, for example, can
damage tissues and genetic material. The energy levels associated
with radio waves from portable 2-way radios, when properly used, are
not great enough to cause biological damage.
Experts in science, engineering, medicine, health and industry work
with organizations to develop standards for exposure to RF energy.
These standards provide recommended levels of RF exposure for both
workers and the general public. These recommended RF exposure
levels include substantial margins of protection. All 2-way radios
marketed in North America are designed, manufactured and tested to
ensure they meet government established RF exposure levels. In
addition, manufacturers also recommend specific operating
instructions to users of 2-way radios.
These instructions are important because they inform users about RF
energy exposure and provide simple procedures on how to control it.
Please refer to the following WEBSITES for more information on what
RF energy exposure is and how to control your exposure to assure
compliance with established RF exposure limits.
http://www.fcc.gov/oet/rfsafety/rf-faqs.html
http://www.osha.gov/SLTC/radiofrequencyradiation/index.html

6 BK Radio
FEDERAL COMMUNICATIONS COMMISSION
REGULATIONS
The FCC rules require manufacturers to comply with the FCC RF
energy exposure limits for portable 2-way radios before they can be
marketed in the U.S. When 2-way radios are used as a consequence
of employment, the FCC requires users to be fully aware of and able to
control their exposure to meet occupational requirements. Exposure
awareness can be facilitated by the use of a product label directing
users to specific user awareness information. Your BK Radio 2-way
radio has a RF exposure product label. Also, your BK Radio owner’s
and service manuals include information and operating instructions
required to control your RF exposure and to satisfy compliance
requirements.
COMPLIANCE WITH RF EXPOSURE STANDARDS
Your BK Radio 2-way radio is designed and tested to comply with a
number of national and international standards and guidelines (listed
below) for human exposure to radio frequency electromagnetic energy.
This radio complies with the IEEE and ICNIRP exposure limits for
occupational/controlled RF exposure environment at operating duty
factors of up to 50% transmitting and is authorized by the FCC for
occupational use only.In terms of measuring RF energy for
compliance with the FCC exposure guidelines, your radio radiates
measurable RF energy only while it is transmitting (during talking), not
when it is receiving (listening) or in Standby Mode. Note: The approved
batteries supplied with this radio are rated for a 5-5-90 duty factor (5%
talk-5% listen - 90% standby), even though this radio complies with the
FCC occupational RF exposure limits and may operate at duty factors
of up to 50% talk.
Your BK Radio 2-way radio complies with the following RF energy
exposure standards and guidelines:
• United States Federal Communications Commission, Code of
Federal Regulations; 47 CFR §§ 1.1307, 1.1310, 2.1091 and
2.1093
• American National Standards Institute (ANSI) / Institute of
Electrical and Electronic Engineers (IEEE) C95. 1-1992
• Institute of Electrical and Electronic Engineers (IEEE) C95.1-
1999 Edition
INDUSTRY CANADA COMPLIANCE
This Class B digital apparatus complies with Canadian ICES-003. Cet
appareil numerique de la classe B est conforme à la norme NMB-003
Canada.
DPH x Owner’s Manual 43
BATTERY INSTALLATION AND REMOVAL
BK Radio battery packs are available in a variety of sizes and types for
special applications. Rechargeable battery packs can be charged
separately or while attached to a radio.
NOTE: For safety reasons, rechargeable battery packs are shipped
uncharged or only partially charged. Therefore, a rechargeable battery
pack should be properly charged before use.
INSTALLING THE BATTERY
1. Locate the center hub on the radio base and
place it in the recess of the battery pack.
2. Position the battery pack at the 30° offset,
seating the two metal studs in their recess.
3. Apply upward pressure to the pack while
twisting the pack to its original position. The
metal tab will click, locking the pack in
position.
REMOVING THE BATTERY
1. Turn the radio off.
2. Push up the metal tab on the side of the
case while twisting the battery pack
approximately 30°.
3. Remove battery pack from the radio.
NOTE: All information programmed into the
radio is maintained even when the
battery pack is removed.
4. Periodically check the contacts on the
battery pack for dirt that could prevent a
good electrical contact with the charging
base.
WARNING: Explosion Hazard
Do not dispose a battery pack into a fire.
An explosion may occur.

42 BK Radio
SCAN LIST CLONING
When a Master radio downloads to a Clone, the
Scan List is also transferred. See page 20 in
this manual for selecting the Scan List.
SECURE PARAMETERS CLONING
When a Master radio downloads to a Clone, the
following secure parameters are transferred:
•Transmit Secure Mode
•Transmit Key Reference
•Transmit Key Lock
Only key references are transferred. Key data is
NOT transferred. Care must be taken to ensure
that Master and Clone radios are configured
with the same key data using an APCO Project
25 compatible key fill device such as the
Motorola KVL 3000 Plus. The radios must also
have identical global key tables, which are
configured using the DPHx PC programming
software.
KEY FILL
Radios that have been optionally configured for encryption must have
encryption keys loaded with an APCO Project 25 compatible key fill
device such as the Motorola KVL 3000 Plus. The radio can hold up to
32 DES or AES keys.
Connect the radio and the key fill device together using a LAA 0587
keyloader cable. Follow key loading instructions provided with the key
fill device.
After loading keys in the radio, use the DPHx PC programming
software to configure the radio’s key table, and to assign default
transmit keys to each channel.
DPH
x Owner’s Manual 7
RF EXPOSURE COMPLIANCE AND CONTROL GUIDELINES
AND OPERATING INSTRUCTIONS
To control your exposure and ensure compliance with the
occupational/controlled environment exposure limits always adhere to
the following procedures.
Guidelines:
• Do not remove the RF Exposure Label from the device.
• User awareness instructions must accompany device when
transferred to other users.
• Do not use this device if the operational requirements described
herein are not met.
Operating Instructions:
• Transmit no more than the rated duty factor of 50% of the time. To
transmit (talk), push the Push-To-Talk (PTT) button. To receive calls,
release the PTT button. Transmitting 50% of the time, or less, is
important because this radio generates measurable RF energy
exposure only when transmitting (in terms of measuring for standards
compliance).
• Hold the radio in a vertical position in front of face with the
microphone (and the other parts of the radio, including the antenna)
at least one inch (2.5 cm) away from the nose. Keeping the radio at
the proper distance is important because RF exposures decrease
with distance from the antenna. Antenna should be kept away from
eyes.
• When worn on the body, always place the radio in a BK Radio
approved clip, holder, holster, case, or body harness for this product.
Using approved body-worn accessories is important because the use
of BK Radio or other manufacturer’s non-approved accessories may
result in exposure levels which exceed the FCC’s
occupational/controlled environment RF exposure limits.
• If you are not using a body-worn accessory and are not using the
radio in the intended use position in front of the face, then ensure the
antenna and the radio are kept at least one inch (2.5 cm) from the
body when transmitting. Keeping the radio at the proper distance is
important because RF exposures decrease with increasing distance
from the antenna.
• Use only BK Radio approved supplied or replacement antennas,
batteries, and accessories. Use of non-BK Radio approved
antennas, batteries, and accessories may exceed the FCC RF
exposure guidelines.
• For a list of BK Radio approved accessories visit the following
website : http://www.relm.com.
CONTACT INFORMATION
For additional information on exposure requirements or other
information, visit website http://www.relm.com.

8 BK Radio
RADIO CONTROLS
BKRADIO
1 2 3
4
5 6
7
8 9
0
*
#
CLR
FCN
PRI
ENT
PRIORITY
BUSY CHANNEL
LOW BATTERY
INDICATOR
TRANSMIT
INDICATOR
ANTENNA
HI/LO
TRANSMIT
POWER
SCAN
PRIORITY
ANTENNA
ACCESSORY
MOUNT
EARPHONE
PTT
(PUSH TO TALK)
SPEAKER
MICROPHONE
LCD DISPLAY
CHANNEL
SELECT
ON/OFF
VOLUME
SQUELCH
CODE GUARD
G
R
P
PRG TX RX SCNID CG
DPH RADIO WITH
KEYBOARD/DISPLAY
COVERED OR
NOT INSTALLED
(REDUCED VIEW)
BK RADIO
CG- OFF- SQ VOL
161
2
3
4
5678 91011 12
13
14
15
A
B C
KEYBOARD
DPHx RADIO WI
T
H
KEYPAD/DISPLAY
COVERED
(REDUCED VIEW)
RX SCNTXPRG ID CG
P
R
G
.
...
.
.
RX
R
XRX
R
XSCN
SCNSCN
SCNTX
TXTX
TXPRG
P
RGPRG
P
RG ID
I
DID
I
DCG
CGCG
CG
P
P
P
P
R
R
R
R
G
GG
G
.
...
.
.
ALPHANUMERIC DISPLAY
SQUELCH
CHANNEL GUARD
TX
DIGITAL
DPH x Owner’s Manual 41
SPECIAL CLONING INSTRUCTIONS
It is possible to change Channel 0 values on the Master radio, hold
them in a temporary memory, and download them to the Clone without
actually entering them into the permanent memory of the Master. This
is convenient for sequential identification numbers used to identify a
series of portables in a radio system.
Assuming that the frequencies,
Channel Guard values, and other CH 0 values are common for all
radios in the system, but that the radio identification number should be
unique to each radio, the following method can be used to clone
additional radios for the system:
1. Program the Master with all frequencies,
Channel Guard values, and Channel 0
values that will be common to all radios.
2. Advance the display to show the ID number
of the master (for example 100).
3. Press the [CLR] key; press 125. Do not
press the [ENT] key. Now 125 is in
temporary memory.
4. Press
[*], connect the cloning cable to the
Clone radio, and download by pressing
[FCN]. ID number 125 is now stored in the
permanent memory of the clone.
5. After downloading, press
[CLR] on the
Master radio. Disconnect the Clone. The
Master radio display will show that 125 is
still being held in the temporary memory of
the master.
6. Press the [PRI] key. This will increment the
ID number one digit to 126.
NOTE: Any new number can be entered at
this point by pressing [CLR] and
using the keypad to enter the new
number.
7. Press the
[*] key. Connect the cloning cable
to the next Clone and download by pressing
[FCN].
8. Any number of radios can be coded with
different or sequential ID numbers using this
technique. The ID number in the permanent
memory of the master will remain unchanged
at 100.
PRG ID
12
5
PRG ID
12
6
1 2 3
4 5
6
7 8
9
0
*
#
CLR
FCN
PRI
ENT
PRG ID
12
5

40 BK Radio
8. Turn on the Clone and set it to the desired
channel group.
9. Press the [*] key on the Master radio
keypad. The display will flash ‘PROG’
signifying that the radio is ready to download
its program to the Clone.
10. Press the [FCN] key on the Master radio
keypad. The program in the Master will then
be downloaded to the Clone.
11. If the download was successful, the display
on the Master will resume flashing ‘PROG’.
• To clone another channel group, turn off
both radios and go back to Step 3 on
the previous page, changing the
channel group as required.
• If cloning is finished, turn off the Clone
and disconnect the cloning cable.
Normal radio operation will occur when
you turn on the Clone.
12. If the download was not successful, the
Master will display ‘FAIL’ and multiple beeps
will follow. Failure of downloading can be
due to:
• Improper connection
• Failure to turn on the Clone
• Setting the Clone in Programming Mode
• Group ‘locked’ by PC Programming
NOTE: To stop the FAIL Mode, press
[CLR], turn off both radios, and try
again, starting with Step 1 on the
previous page.
PRG
FAIL
PRG
PROG
1 2 3
4 5 6
7 8 9
0
* #
CLR
FCN
PRI
ENT
1 2 3
4 5 6
7 8 9
0
* #
CLR
FCN
PRI
ENT
DPH x Owner’s Manual 9
BASIC OPERATION
RECEIVE 1. Turn power on by turning the Volume knob
clockwise. A beep sounds, indicating the
radio is operational. The LCD display, if
installed, shows the current channel.
2. Select a channel
by turning the 16-position
Channel Selector knob.
3. Adjust squelch and volume
by turning the
Squelch knob clockwise until you hear
noise. Set the volume to a comfortable level.
Then turn the Squelch knob
counterclockwise until the noise stops. This
is called the Threshold Squelch setting.
Turning the Squelch knob fully counterclockwise
past the detent places the receiver in Channel
Guard. A message will be heard only when the
proper Channel Guard value is received.
TRANSMIT 1. Press the PTT (Push-To-Talk) switch. When
the transmitter is on, the red Transmit
Indicator glows and TX appears in the
display.
2. Talk in a normal voice with the microphone
one to two inches from your mouth.
3. Release the PTT switch to stop transmitting.
If the Transmit Indicator does not glow when you
press the PTT switch, the battery pack may
need to be charged. If so, the display will
indicate LOBATT, and the yellow Low-Battery
Indicator will flash. If the Transmit Indicator does
not glow and a tone sounds, you are on a
receive-only channel or the channel is busy (if
Busy Channel lockout is enabled). Select an
authorized transmit channel.
If the length of your message exceeds the
preset Time-Out Timer setting, the transmitter
automatically shuts off and a tone sounds. To
continue transmission, release the PTT switch,
and then press it again and continue talking.
Microphone
PTT

10 BK Radio
CHANNEL GUARD OPERATION
ANALOG SQUELCH CONTROL
Sub-audible signaling (CTCSS/CDCSS) is used
to allow a group of radios to be selectively called
in a system. Programming the receive guard
equal to zero allows for Carrier Squelch
operation, where the radio will unmute whenever
a carrier is detected.
APCO PROJECT 25 SQUELCH CONTROL
Network Access Codes (NACs) provide the
digital equivalent of analog sub-audible signaling
(CTCSS/CDCSS) allowing a group of radios to
be selectively called within a system.
Users in the same area (using the same NAC)
can be further divided into Talk Groups, with
each group having its own Talk Group ID (TGID).
Group Calls are made by designating both the
users’ NAC and TGID.
Each radio also has an individual P25 unit ID. A
Unit-to-Unit call contains the addressee’s NAC,
and uses the addressee’s P25 unit ID instead of
the TGID.
When operating in Digital Mode, each channel
can be programmed to use either Normal
squelch or Selective squelch.
1. Normal squelch is used to mimic analog
operation. Signals are only qualified with the
programmed NAC. TGIDs and P25 Unit IDs
are ignored. Each digital channel is
programmed with a receive NAC and a
transmit NAC. When an incoming signal’s
NAC matches the channel’s programmed
receive NAC, the radio unmutes. The default
NAC is 659 ($293 hex). The digital
equivalent of carrier squelch is achieved by
programming the receive NAC = 3966($F7E
hex) the radio will unmute when a digital
signal with any NAC is detected. The 3966
($F7E hex) NAC is reserved for receivers
and is not allowed as a transmit NAC.
DPH
x Owner’s Manual 39
Master Clone
Master
Switch
CLONING PROCEDURE
Any “Master” radio (a DPH x with the desired radio frequencies and
settings) is capable of transferring its program to another DPH x or
“Slave” radio. The radio receiving the program is also referred to as the
“Clone.” The LAA0700 cloning cable will be required in the following
procedure. Contact your BK Radio dealer for information on cloning
between DPH
x radios and other BK Radio products.
NOTE: Some groups may be “locked” by PC programming to prevent
them from being overwritten. Only “unlocked” groups will
accept incoming clones.
1. Make sure the battery packs for both radios
are charged.
2. Attach the master switch end of the cloning
cable to the side connector of the Master
radio.
NOTE: One plug of the cloning cable has
a push-button master switch. This
plug must be attached to the
Master radio.
3. Turn on the Master radio.
4. Select the group to be cloned from the
Master radio.
5. Put the Master radio in Programming Mode
by pressing and holding the master switch
then pressing and holding the [FCN] key
until the display shows ‘- - - ID.’ Enter the
password of the selected group. The display
shows ‘PRG CH 00.’
6. Review the values programmed in the radio
by pressing the [FCN] or [ENT]
key at each
CHXX prompt. Any required changes must
be made now.
7. Connect the other plug of the cable to the
side connector of the radio you want to
clone.
PRG
CH 00

38 BK Radio
DISPLAY BACKLIGHTING
The DPH x radios can be programmed by your
dealer to backlight the display when a signal is
received or when a key is pressed. The time
duration of the backlighting can also be
programmed.
CHANNEL LABELS
You can program the radio with a label for each
of the 25 channel groups and a label for each of
the 16 channels within each group.
To display the channel number associated with
a channel label:
1. Press the [#] key to display the group
number.
2. Press the [#] key again to display the
channel number.
3. Press and hold the [#] key to display the
channel label.
4. Press [ENT].
Each label can include up to eight characters,
with decimal points available between
characters. Characters can include A–Z, 0–9, -,
*, $, /, +, %, \, |, _, <, >, h,or a blank space.
GROUP LABELS
The display can show group labels in addition to
group numbers.
To display a group label, turn scanning functions
off, then:
1. Press the [#] key on the keypad to display
the group number.
2. Press and hold the [#] key to display the
group label.
3. Press the [ENT] key or wait for about
5 seconds to revert to normal radio
operation.
F I RE NE
T
Channel Label
CH 12
Channel Number
1 2 3
4 5 6
7 8 9
0
* #
CL
R
FCN
PRI
EN
T
1 2 3
4 5 6
7 8 9
0
* #
CL
R
FCN
PRI
EN
T
DPH x Owner’s Manual 11
2. Selective squelch is used for processing
‘Group Calls’ and ‘Unit-to-Unit Calls’. TGIDs
are assigned on a per-channel basis. Users
can be separated into Talk Groups with each
group having its own TGID. Then, on
channels programmed for Selective squelch,
the incoming signal’s NAC and TGID must
match the channels programmed receive
NAC and TGID for the radio to unmute. The
default TGID is 1. The TGID value 65535
($FFFF hex) is used to effect an “All Call”. If
the radio receives a signal with a matching
NAC and the TGID = 65535 ($FFFF hex), it
will unmute. Also, if the radio’s programmed
TGID is 65535 ($FFFF hex), it will open on
any signal with a matching NAC, ignoring the
incoming TGID. A TGID = 0 means “no
one”. If the radio is programmed with the
TGID = 0, it will accept incoming group calls
containing the “All Call” TGID, and correctly
addressed Unit-to-Unit calls.
CHANNEL GUARD RECEIVE
1. Turn power on by turning the Volume knob
clockwise.
2. Select a Channel Guard channel by turning
the Channel Selector knob.
3. Adjust volume by turning the Squelch knob
clockwise until a noise is heard. Set the
volume to a comfortable level.
4. Set Channel Guard Mode
by turning the
Squelch knob off (counterclockwise) into the
Channel Guard position. A message will be
heard only when the proper Channel Guard
value is received.

12 BK Radio
CHANNEL GUARD TRANSMIT
1. Turn the Squelch knob on (clockwise) and
monitor the Channel Guard channel before
transmitting, or, if Busy Channel operation is
enabled, check the yellow LED.
NOTE: Do not transmit if the channel is
busy.
2. Press the PTT switch. When the transmitter
is on, the red Transmit Indicator glows and
TX appears in the display.
3. If monitoring the channel,
reset the squelch
knob
to the Channel Guard position to
receive only the messages with the proper
Channel Guard value. During extended
transmissions, the squelch can be left open
until the exchange has ended.
MIXED MODE OPERATION
The receiver and transmitter are capable of
operating in analog wide-band (25 kHz channel
spacing), analog narrow-band (12.5 kHz channel
spacing) and APCO Project 25 Digital Mode.
Each channel’s Receive and Transmit Mode can
be set independently as follows:
Mode RX TX
Analog Receive qualified
analog signals
only
Transmit analog
signals only
Digital Receive qualified
digital signals
only
Transmit digital
signals only
Mixed Automatically
receive qualified
analog or digital
signals
Transmit analog or
digital signal,
depending on the
status of ‘TX
Digital’ soft switch.
Digital receptions and transmissions will be
indicated by illuminating the ‘ID’ annunciator in
addition to the ‘RX’ or ‘TX’ annunciator.
Analog
Operation
RX
CH 12
TX
CH 12
Digital
Operation
RX ID
CH 12
TX ID
CH 12
Busy Channel
Indicato
r
DPH x Owner’s Manual 37
P
P
P
P
R
R
R
R
G
GG
G
.
...
.
.
RX
R
XRX
R
XSCN
S
CNSCN
S
CN ID
I
DID
I
DCG
CGCG
CG
ALPHANUMERIC DISPLAY
TX
TXTX
TXPRG
P
RGPRG
P
RG
ALPHANUMERIC DISPLAY
DPH x radios have a slide-out keypad/display
cover. To remove or install the cover, turn off
the radio and remove the battery (see Battery
Installation and Removal, page 43).
The Alphanumeric Display can be programmed
to operate in Numeric Mode, displaying channel
numbers instead of labels.
Display annunciators indicate the following
information:
Alphanumeric Indication
PR -Priority Channel
G -Secure Mode
PRG -Programming Mode
TX -Transmit
RX -Receive
SCN -Scan List Channel
-Flashing SCN indicates scanning
in progress and RX SCN indicates
receiving on a scanned channel.
ID -Digital reception/transmission –
‘It’s Digital’
-Programming Mode – Automatic
Numeric Identification (ANI)
CG -User Channel Guard Active
GRP -Group Label
-Individual Call
-Flashing phone icon indicates
missed call.
DPH
x Series portable radios with alphanumeric
displays can be programmed with the following
features:

36 BK Radio
When scanning or priority scanning Channel
Guard channels with the Squelch knob in the
Channel Guard position and activity has been
detected, the Busy Channel Indicator glows for
the time period necessary to determine if the
proper Channel Guard value has been received.
This will cause the Busy Channel Indicator to
flash at various rates.
BUSY CHANNEL LOCKOUT
The Busy Channel Lockout feature applies only
to those channels programmed with a receive
Channel Guard value. When carrier activity is
detected on the channel selected, the radio
checks the receive Channel Guard value. If the
proper Channel Guard value is present, the
radio can transmit on that channel, even if the
Squelch knob is in the Channel Guard position.
If the radio detects an incorrect value or carrier
activity only, the transmitter is disabled. If an
attempt is made to transmit, an alert tone will be
generated and the display will show the word
BUSY until the channel becomes available or
the PTT switch is released, whether the Squelch
knob is in or out of the Channel Guard detent.
Channels not programmed with a receive
Channel Guard value can be used to transmit
regardless of carrier activity.
BUSY CHANNEL LOCKOUT WITH OVERRIDE
This mode operates in the same manner as
Busy Channel Lockout except that the user can
override and transmit by turning the Squelch
knob off the Channel Guard detent. The
transmitter is locked out only if the Squelch knob
is set to the Channel Guard detent.
BUS
Y
DPH x Owner’s Manual 13
MIXED MODE TALKBACK
If Mixed Mode Talkback is enabled,
transmissions initiated while hold time remains
will be in the same mode as the received signal,
if the signal was received on the Ready to
Transmit (RTX) channel. Depending on
programming, the RTX channel can be the main
channel, a held scan or priority channel if
Talkback Scan is enabled, or the Priority 1
channel if TX on PR1 is enabled. TX Mode on
the RTX channel must be set to MIXED.
While hold time after a reception remains,
transmissions will be in the same mode as the
received signal, regardless of the status of the
‘TX Digital’ soft switch. As in Talkback Scan, the
RTX channel and receive annunciators will be
displayed for the duration of the timer.
The talkback timer can be cleared by making the
held channel invalid. For instance, if a scan
channel is being held, turn scan off.
SECURE OPERATION
The radio may optionally be configured for
Secure communication on channels operating in
Digital Mode. No encryption is available for
analog channels.
The receiver automatically detects both clear and
secure signals.
The transmitter selects clear or secure operation
based on each channel’s programming. Digital
channels can be programmed to always transmit
encrypted, always transmit clear, or to select the
Transmit Mode with the ‘TX Secure’ switch.
If enabled by programming, a ‘Clear TX-mode
Warning Beep’ will sound whenever the radio
transmits in Clear Mode.
RX
CH 12
Press PTT
During Hold Time
(while the ‘RX’
annunciator is lit)
Unencrypted
RX
CH 12
TX
CH 12

14 BK Radio
The display indicates Secure Operation as
follows:
1. In Standby Mode, if the radio will transmit in
Secure Mode when PTT is pressed, the
encrypt icon flashes in the display.
2. When receiving or transmitting an encrypted
signal, the encrypt icon flashes in the
display.
TRANSMIT KEY SELECTION
The radio can hold up to 32 DES or AES
encryption keys. Each channel is assigned a
default key for transmit. The key can be locked
to the channel, or if programming allows, a
transmit key other than the default key can be
selected from the radio’s Key Pick List. If a key
is selected from the pick list, it will be used
during transmit on every channel that allows
selectable keys.
To access the Key Pick List, press the touchpad
[FCN] button. The display momentarily shows
‘KEY ##’, where ## is the number of the
currently selected transmit key, and then shows
the key’s label. If no key has been selected
(default keys are being used), the display shows
‘KEY DFLT.’ If the [FCN] is pressed again, the
radio displays the first of any soft switches
assigned to the function menu (see page 17).
Press the [PRI] button to step through the list of
key labels, or enter the number of the desired
transmit key. Press the [ENT] button to activate
the selected transmit key. Press “0” or the
[CLR] button to return to using default (pre-
programmed) transmit keys on all channels.
If a key is selected that has not been
programmed, when PTT is pressed, the radio will
not transmit but will beep and display ‘NO KEY’.
Encrypted
GRX ID
CH 12
GTX ID
CH 12
Ke
y
dfl
t
Ke
y
22
No Ke
y
G
CH 12
Standby
DPH x Owner’s Manual 35
ANI ENCODING (Analog Mode Only)
ANI encoding (Automatic Numeric Identification),
if enabled, transmits a sequence of DTMF tones
each time you press the PTT switch. You will
hear a sidetone. Your dealer can program the
ANI number to be sent.
If DTMF and ANI are both enabled, the ANI tone
sequence is transmitted only after the [ENT]
key
is pressed while the PTT switch is activated.
You will hear a sidetone.
TIME-OUT TIMER
The transmit Time-Out Timer limits the duration
of calls and guards against accidentally locking
on the transmitter and tying up the radio system.
Your dealer can program the duration of the
Time-Out Timer (15–225 seconds, or disabled).
BUSY CHANNEL
If the radio has been programmed for Busy
Channel operation, it will operate in one of the
following three Modes:
• Busy Channel Indication
• Busy Channel Lockout
• Busy Channel Lockout with Override
BUSY CHANNEL INDICATION
The yellow Busy Channel Indicator glows if
there is carrier activity on the selected channel.
If the selected channel is a Channel Guard
channel and the proper Channel Guard value is
not detected, the Busy Channel Indicator
remains on for the duration of the carrier activity
and no message is heard. During Scan and
Priority Scan operation, the Busy Channel
Indicator glows when activity is detected on any
channel on the Scan List.
1 2 3
4 5 6
7 8 9
0
*#CLR
FCN
PRI
ENT

34 BK Radio
SCAN DELAY
Scan delay lets the radio receive a response to
a transmission before scanning the other
channels for activity. If you find that your
scanner is restarting before message replies are
received, you can ask your dealer to increase
the scan delay time (0–7.5 seconds).
This timer is also used to allow for Talkback
Scan, Mixed Mode Talkback, and Unit-To-Unit
Callback.
HI/LO POWER
Each channel in the radio can be individually
programmed to always transmit in Low-Power
Mode, regardless of the position of the radio's
top switch (or keypad [FCN] menu setting). If the
programming for the channel allows high-power
transmissions, the power level can be selected
with a top switch or the keypad menu.
DTMF ENCODING (Analog Mode Only)
Keypad-equipped radios can be programmed to
enable DTMF (Dual Tone Multiple Frequency)
encoding. To send DTMF tones (similar to the
tones used by a standard push-button
telephone):
1. Press and hold the PTT switch.
2.
Press any of the keys on the keypad.
You will hear a sidetone.
The FCN,PRI, ENT, and CLR keys respond as
DTMF tones A, B, C, and D, respectively.
1 2 3
4 5 6
7 8 9
0
*#CLR
FCN
PRI
ENT
DPH x Owner’s Manual 15
ZEROIZATION
The radio provides a method for the user to
panic-zeroize all encryption keys. This service
also sets all touchpad passwords to ‘FFFFFF’.
The zeroization service is invoked as follows:
•Press and hold the [CLR] button.
•Wait for the radio to start beeping and for the
‘ZERO ALL’ message to appear on the LCD.
•While continuing to hold the [CLR] button,
press and release the PTT switch.
•Release the [CLR] button.
•The radio will stop beeping and the
‘ZEROIZED’ message will appear on the
LCD after all keys are destroyed.
If the [CLR] button is released before PTT is
pressed, keys and passwords will not be
destroyed, and ‘CANCELED’ will appear on the
LCD.
CHANNEL GROUPS
Radios are separated into groups of 16
channels each. Each group of 16 channels can
be programmed to have an "individual
personality" with its own set of operational
features.
SELECT A GROUP/CHANNEL
The Group/Channel Selector knob can be
programmed by your dealer as a Channel
Selector, a Group Selector, or a Custom
Group/Channel Selector.
CHANNEL SELECTOR. Knob positions 1–16
select channels in the group selected by the
keypad:
1. Press the [#] key on the keypad to display
the current group number.
GRP 01
Group Number
161
2
3
4
567891011 12
13
14
15
1 2 3
4
5 6
7
8 9
0
* #
CLR
FCN
PRI
ENT
ZERO ALL
canceled
zeroized

16 BK Radio
2. Press a number key for the new group
number. Only valid group entries will be
accepted.
When changing groups, invalid entries will
not be accepted, and the radio remains in
the previously selected group.
3. Press the [ENT] key or wait 5 seconds. The
radio returns to normal operation for the new
group, and the selected channel is
displayed. All selected scanning and priority
functions affect only the channels in the
group you are operating in.
GROUP SELECTOR. Knob positions 1–16
select groups 1–16:
1. Press [#] twice to select a channel.
2. Press a number key for the new channel
number.
3. Press the [ENT] key or wait 5 seconds. The
radio returns to normal operation for the new
channel, and the selected channel is
displayed.
CUSTOM SELECTOR. Your dealer will provide
you with the pre-programmed Group/Channel
combinations for your radio.
If a knob position is programmed to allow
selection of the group and/or channel with the
keypad:
1. Press [#].
2. Press the number of the group you want to
change to.
3. Press [#] again.
4. Press the number of the channel you want
to change to.
5. Press the [ENT] key or wait 5 seconds. The
radio returns to normal operation for the new
channel, and the selected channel is
displayed.
1 2 3
4 5 6
7 8 9
0
* #
CLR
FCN
PRI
ENT
DPH x Owner’s Manual 33
CG
LABEL
5
Use Channel 9
Channel Guard Values
For Channel 5
For example, to use the Channel Guard values
of Channel 9 with the frequencies of Channel 5:
1. Slide Switches B and C down.
2. Turn the Channel Selector knob to Channel
5.
3. Press the [9] key on the keypad. The
display shows CG.
The radio will now operate on the
frequencies of Channel 5 with Channel 9
Channel Guard values. The display shows
the Channel Guard channel (9), and then
the selected channel (5).
4. Press the [#] key to display the Channel
Guard channel briefly. The display shows
the group number, followed by the Channel
Guard channel, and then the selected
channel.
5. Press the [0] key
to reset all values to the
original programming, or press different
number keys (1–16) to select a different set
of Channel Guard values.
NOTE: During Scan or Priority Scan, the
receiver does not use the user-
selected Channel Guard values.
However, user-selected Channel
Guard values are used by the
transmitter in Scan Mode.
OTHER OPERATIONAL FEATURES
The BK Radio D Series is based on a microprocessor core that allows
extra features and operational characteristics to be programmed into
the radio. Your dealer can help define the best operational settings for
your system and program them into the radio.
CG
LABEL 9
Copy Channel Guard
Values from
Channel 9
1 2 3
4 5 6
7 8 9
0
*
#
CLR
FCN
PRI
ENT

32 BK Radio
EMERGENCY CALL
Note: Emergency operation only applies to channels
programmed for Digital or Mixed Mode transmissions. If the
channel is programmed for Mixed Mode transmissions, the ‘TX
Digital’ switch must be ON.
To place an emergency group call, press and
hold the emergency button until the radio beeps
and the display flashes. On some models, the
emergency button may be the [PRI] key. All
scanning and priority scanning functions will be
disabled. If the radio is in Unit-To-Unit Mode,
that mode will be exited and the radio will be
placed in Emergency Mode. Each subsequent
press of PTT will cause the radio to transmit on
the knob-selected channel with the emergency
bit set, indicating an emergency condition. If the
Channel Selector is changed, the Emergency
Mode will follow to the newly selected channel.
Cycle power to return the radio to normal
operation.
On channels programmed for analog
transmissions, and channels programmed for
Mixed Mode transmissions with the ‘TX Digital’
switch OFF, pressing PTT in Emergency Mode
will result in a normal analog transmission.
USER SELECTED CHANNEL GUARD
When the radio is being programmed with transmit and receive
frequencies for each channel, a receive Channel Guard value and a
transmit Channel Guard value can also be assigned to each channel. If
User Channel Guard Selection is enabled, the Channel Guard values
for any channel can be copied to another channel in the radio. On
channels programmed for Analog operation only, the CTCSS or
CDCSS guard values will be copied. On channels programmed for
Digital operation only, NAC’s only will be copied unless the radio is
programmed to also copy the Talk Group ID (TGID), Mode (Digital,
Analog or Mixed) and Squelch setting (Normal or Selective). On Mixed
Mode channels, Analog or Digital values will be copied as needed.
1 2 3
4 5 6
7 8 9
0
*
#
CLR
FCN
PRI
ENT
LABEL
DPH x Owner’s Manual 17
If the group or channel is locked to a switch
position, pressing [#] will only display the pre-
programmed value. New entries will not be
accepted.
PROGRAMMABLE TOP SWITCHES/
FUNCTION MENU
The following functions can be assigned to the
three top switches or the keypad [FCN] key
menu:
FUNCTION FCN Key Menu Label
Low Power Select LO POR
Channel Scan ChN SCN
Priority Scan PRI SCN
Repeater Talk Around TRN DIR
Group Scan GRP SCN
Transmit Digital TX DIG
Transmit Secure TX SEC
Your dealer can also assign more than one
function to the same top switch. For example,
both low-power select and RTA could be
enabled by the same switch.
NOTE: Assume for this Owner’s Manual that
Switch ‘A’ has been programmed for
TX Digital, Switch ‘B’ has been
programmed for Scan, and Switch ‘C’
has been programmed for Priority
Scan.
TX
Digital
Scan Priority
Scan

18 BK Radio
To access functions on the keypad FCN key
menu:
1. Press the [FCN] key to display the function
menu.
2. Repeatedly press [FCN] to step through the
menu.
3. Press [PRI] to toggle the function on/off
when the desired menu item is displayed.
When the display flashes, the function is
enabled.
KEYPAD LOCK
To lock/unlock the keypad, press and hold the
[FCN] key. When locked, ‘LOCKED’ will be
displayed if a key is pressed and a low beep will
sound.
LOCKOUT EXCEPTIONS:
1. If enabled, a long [PRI] key press will
activate Emergency Mode even when the
keypad is locked.
2. PTT unlocks the keypad during transmit for
enabled DTMF key presses.
3. The keypad will be automatically unlocked
when Unit-To-Unit Mode is entered by
pressing PTT to respond to a Unit-To-Unit
call, when Unit-To-Unit callback is enabled.
The keypad will be re-locked when Unit-To-
Unit Mode is exited.
SCAN OPERATION
1. Slide Switch B (scan) up.
2. Slide Switch C (priority) down.
The display indicates scan operation by flashing
SCN or two flashing dashes at the right side of
the display if Numeric Display Mode is selected.
1 2
3
4 5
6
7
8
9
0
*
#
CL
R
FCN
PRI
EN
T
SCN
LABEL 3
LOCKED
DPH x Owner’s Manual 31
PROGRAMMING A LABEL
Press the [CLR] key. The display becomes
blank.
Press number keys to enter 0-9 in positions 1-7.
The digits start in position 7, then move left.
1. Press the [#] key to toggle a decimal on or
off to the right of the character in position 7.
The decimal moves left with the number in
position 7 as new numbers are entered.
2. Use the following steps to enter a number in
position 8 or characters in positions 1-8:
a. Press the [PRI] key repeatedly to cycle
through characters 0-9, A-Z, -, *, $, /, +,
%, \, |, _, <, >, h, blank, then back to the
start again.
If you pass the desired character, press
the [PRI] key repeatedly until you return
to the start and reach that character
again.
b. Press the [FCN] key to shift the display
left by one position, leaving position 8
blank.
c. Press the [PRI] key repeatedly to enter
the next character, or press the [FCN]
key a second time to enter a blank
space.
d. To abandon changes, press the [CLR]
key, restoring the original label.
e. Press the [ENT] key to store changes.
PROGRAMMING A NUMERIC ID
Press [ENT] to display the numeric ID. Press
[CLR] then enter the new ID (up to 7 digits).
Press [ENT] to store the new ID. Select a new
ID to be programmed, or press and hold [ENT]
to exit Programming Mode (the PRG
annunciator will be extinguished).
PRG ID
14
5

30 BK Radio
UNIT-TO-UNIT CALLBACK
If Unit-To-Unit callback is enabled, and a Unit-
To-Unit call is received on the Ready-to-
Transmit (RTX) channel, the user may press
PTT before the hold time expires, causing the
radio to enter Unit-To-Unit Mode and transmit
using the received ID as the destination ID. If
the callback timer expires before PTT is
pressed, the radio will return to normal
Operating Mode, but the phone icon will flash
until the [*] key is pressed, bringing up the last
active ID.
To exit Unit-To-Unit Mode, press and hold
the [*] key.
The callback timer can be cleared by making the
held channel invalid. For instance, if a scan
channel is being held, turn scan off.
PROGRAMMING UNIT-TO-UNIT CALL LIST
Press [*] to bring up the last active ID. If the last
active ID was a Call List ID, the ID’s label will be
displayed along with the phone icon. Otherwise,
the ID number will be displayed along with the
phone and ID icon.
Press a number key (0 – 9) to go directly to the
desired Call List ID, or press [PRI] repeatedly to
cycle to the label of the ID to be re-programmed.
Press and hold the [FCN] key to enter ID
Programming Mode (PRG icon will be
illuminated). As in keypad Programming Mode,
normal radio function will be disabled until ID
Programming Mode is exited.
1 2 3
4 5 6
7 8 9
0
*
#
CLR
FCN
PRI
ENT
PRG
LABEL
DPH x Owner’s Manual 19
Scan operates only while the radio is not
transmitting. The radio checks for signals on
channels in the preset Scan List, as well as the
channel selected by the Channel Selector knob.
When a signal is detected, scanning stops and
the message is received. The received channel
is shown in place of the transmit channel.
Once the signal ends, the radio continues to
monitor the channel for the preset scan delay
time before it resumes scanning.
SCAN CHANNEL GUARD CHANNELS
1. Slide Switch B (scan) up.
2. Turn the Squelch knob completely counter-
clockwise, past the detent, to the Channel
Guard position.
When a signal is detected, scanning stops while
the radio checks for the proper Channel Guard
value. If the signal contains the proper Channel
Guard value, the radio receives the message.
Otherwise, the radio resumes scanning
immediately.
NUISANCE CHANNEL DELETE
If your radio is programmed for Nuisance
Channel Delete and Channel Scan is assigned
to a top switch (Switch B, for example), a
Nuisance Channel can be temporarily removed
from the Scan List by sliding Switch B (scan)
down and then back up.
TRANSMIT WITH SCAN ON
When Switch B (scan) is up, the radio transmits
on the channel selected by the Channel Selector
knob unless Talkback Scan is enabled or
Priority Scan is enabled (see Priority Scan
operation).
1. Select a transmit channel by turning the
Channel Selector knob.
RX SCN
LABEL 3
c
h
1 - -

20 BK Radio
2. Press and hold the PTT switch and talk in a
normal voice.
When the PTT switch is released, the radio
continues to monitor the selected channel for
the preset scan delay time before it resumes
scanning.
TALKBACK SCAN
If your radio is programmed for Talkback Scan,
press PTT while a channel is active or while
scan delay time remains. You will be responding
on the transmit frequency of the received
channel.
Talkback Scan will not work if Priority Scan is
also on and your radio is programmed to always
transmit on the Priority 1 channel.
CHANGE THE SCAN LIST
If the radio has not been programmed for Scan
List Lock, the user may add or remove channels
from the Scan List. If user changes are enabled,
follow these steps to change the Scan List:
1. Slide Switches B (scan) and C (priority)
down.
2. Select a channel
to be added or removed
from the Scan List by turning the Channel
Selector knob. If the channel is already on
the Scan List, SCN appears in the display.
3. Press the [ENT] key
to add a channel to the
Scan List. A short beep sounds and SCN
appears in the display.
4. Press the [CLR] key
to remove a channel
from the Scan List. A short beep sounds
and SCN disappears from the display.
SCN
LABEL 12
1 2 3
4 5
6
7 8 9
0
*
#
CLR
FCN
PRI
ENT
DPH x Owner’s Manual 29
INITIATING A UNIT-TO-UNIT CALL
To initiate a Unit-To-Unit call, press the [*] key to
enter Unit-To-Unit Mode. The label of the last
active (called or received) ID will appear on the
display.
If the last active ID was a Call List ID, its label
will be displayed along with the phone icon,
otherwise the numeric ID will be displayed along
with the phone and ID icon. If a label is
displayed, press and hold [#] to view the
corresponding numeric ID.
To place a call to the displayed unit, press PTT.
To choose another unit, use the keypad to enter
the desired call list entry (0 - 9), or press [PRI]
repeatedly to cycle through all call list entries, or
press [#] to manually key in a new ID (up to 7
digits). To re-select the ‘last active’ ID, press the
[*] key. Once the new unit ID is selected or
entered, press PTT to place the call.
To exit Unit-To-Unit Mode, press and hold
the [*] key.
RECEIVING A UNIT-TO-UNIT CALL
When a Unit-To-Unit call is received while the
radio is in normal Operating Mode, the radio will
beep twice. The display will show the ID of the
calling unit. If the ID matches one of the Call
List IDs, the associated label will be displayed
along with the RX and phone icons. Otherwise
the numeric ID will be displayed along with the
RX, phone, and ID icons. The calling unit’s ID
will be displayed for the duration of the
reception, and once the signal goes away, for a
programmed hold time. When the hold time
expires, the display will return to the normal
Operating Mode display, but the phone icon will
flash until the [*] key is pressed, putting the
radio in Unit-To-Unit Mode, displaying the last
active ID.
1 2 3
4 5 6
7 8 9
0
*
#
CLR
FCN
PRI
ENT
LABEL
Last Active Was Unit
On Call List
ID
<
Prompt For
Manual ID Entr
y
RX
LABEL
Incoming Call From
U
ni
t
O
n
Ca
ll Li
st
ID
14
5
Last Active Was Unit
Not On Call List
CH
5
Missed Call
Incoming Call From
Unit Not On Call List
RX ID
14
5

28 BK Radio
To speak to the interrupting caller, press [*] to
make the last active ID the new default transmit
ID.
When a group call (or, if allowed, an analog
signal) is received, the radio will display the RTX
channel’s label for the duration of the reception.
If the RTX channel’s Digital Squelch Mode is set
to ‘normal’, the radio performs as when the
Squelch Mode is ‘selective’, except all individual
calls will be received when the incoming NAC
matches the channel’s programmed receive
NAC, not just individual calls addressed to the
unit. Individual calls not addressed to the unit
will be indistinguishable from group calls. Only
the channel label will be displayed, not the ID of
the calling unit.
If Unit-To-Unit Mode is entered when the RTX
channel is programmed for analog-only
transmissions, pressing PTT will cause the radio
to beep until PTT is released. The user must
select a channel capable of digital
transmissions before placing a Unit-To-Unit
call. If the RTX channel is programmed for
Mixed Mode transmit, transmissions will be
made as digital Unit-To-Unit calls while the radio
is in Unit-To-Unit Mode, regardless of the
position of the ‘TX Digital’ switch.
RX
CH 5
Incoming
Analog Call
DPH x Owner’s Manual 21
GROUP SCAN
Channels on each “Channel Scan List” in groups
on the “Group Scan List” are scanned
sequentially. The selected group is always
scanned when Group Scan is enabled, even if
that group is not on the Group Scan List.
When Group Scan is enabled, the following
features are disabled:
• Priority Scan
• Dual Priority Scan
• User-Selected Channel Guard
• Nuisance Channel Delete
PRIORITY SCAN
Priority Scan enables the radio to receive on any
channel while monitoring for a message on the
designated priority channel(s). The radio
samples each priority channel at a preset rate
(.25-2.0 seconds) regardless of activity on any
other channel. Priority Scan operates only while
the radio is not transmitting and can be used in
combination with scan operation.
When Switch C (Priority) is up, the display
flashes SCN. If a message is received on a
priority channel, the Priority Indicator lights, and
the radio receiver locks onto that channel for the
duration of the transmission, unless a higher
priority channel interrupts.
Priority Scan can be used in combination with
Channel Guard with:
•Switch C (Priority) up
•The Squelch knob in the Channel Guard
position (fully counterclockwise detent
position) and
•The Priority Channel(s) programmed with
Channel Guard
If a message is received on a priority channel,
the radio receiver locks on to the priority channel
and checks to see if the proper Channel Guard
PR SCN
LABEL 3